126 results about "CALCIUM AMINO ACID CHELATE" patented technology

Calcium amino acid chelate complexes for fortification of dairy products and oleaginous foods, dairy products and oleaginous foods fortified with calcium amino acid chelate complexes, and methods of preparing calcium amino acid chelate complexes are disclosed and described. The calcium amino acid chelate complexes of the present invention are stable, palatable, and bioavailable. Preparation steps include reacting a calcium compound, an amino acid ligand, a pH adjuster, and, optionally, a stabilizing / suspending agent in an aqueous environment.

This invention discloses a sustained-release chelated topdressing fertilizer containing secondary and trace elements. The sustained-release chelated topdressing fertilizer is composed of: urea 10-50 parts, ammonium sulfate 0-30 parts, ammonium chloride 0-35 parts, potassium chloride 0-30 parts, potassium sulfate 0-40 parts, calcium amino acid chelate 0-1 part, magnesium amino acid chelate 0-1 part, ferric amino acid chelate 0-1 part, zinc amino acid chelate 0-1 part, copper amino acid chelate 0-0.2 part, molybdenum amino acid chelate 0-0.1 part, manganese amino acid chelate 0-0.1 part, attapulgite 2-8 parts, borax 0-1 part, and dicyandiamide 0.02-0.1 part. The sustained-release nitrogen fertilizer has long effective period and high utilization rate of nitrogen, and can supplement necessary secondary and trace elements to crops. Crops applied with the sustained-release nitrogen fertilizer have such advantages as high yield, high quality, and no deficiency or loss of nitrogen in late period.

The invention relates to a method for preparing compound amino acid chelate calcium from low-value freshwater fish bones. The method comprises the following steps: washing and steaming fish bones andthen soaking the fish bones in sodium hydroxide; then washing the fish bones to be neutral; drying and pulverizing the fish bones; extracting calcium in fish bone powder by an acidolysis method; chelating calcium ions in the fish bone powder by using compound amino acid; carrying out centrifugation to obtain clear liquid; washing an obtained product twice by absolute alcohol and then carrying outcentrifugation to obtain precipitates; and drying and pulverizing the precipitates to obtain a calcium acid chelate capsule product. The invention firstly adopts the fish bones which are by-products of processing low-value freshwater fishes to prepare the compound amino acid chelate calcium, thereby greatly improving the additional value of the by-products of the freshwater fishes. Proved by an animal experiment, the compound amino acid chelate calcium has thighbones calcium content of a rat of 32.81-43.41 and thighbones calcium retention rate of 5.30-16.30. If the compound amino acid chelatecalcium is matched with VD3, the bioavailability can be increased more and the effect of calcium supplement is improved. The calcium supplement effect of the compound amino acid chelate calcium is equivalent to the calcium supplement effect of calcium gluconate and higher than the calcium supplement effect of calcium carbonate, but the calcium retention rate of the compound amino acid chelate calcium is obviously higher than that of the calcium gluconate group and the calcium carbonate group.

The invention discloses a production method of water flush fertilizer containing dual-acid chelating-type trace elements, which belongs to the manufacturing field of the composite fertilizer. The fertilizer product is produced by adopting following raw materials that: ammonium nitrate, monoammonium phosphate, potassium sulphate, soil conditioning agent, growth promoter, fruit coloring swelling agent, active root promoting agent, nitro-humic acid, humic acid magnesium, humic acid zinc, humic acid urea iron, amino acid chelating boron, amino acid chelating copper, amino acid chelating manganese, amino acid chelating molybdenum, amino acid chelating calcium and microorganism strain. The fertilizer has main advantages that the fertilizer is uniform and safe to apply; the fertilizer is convenient to apply and free from damaging the roots; rapidness in absorption is realized, and the fertilizer effect is good; and the fertilizer has advantages for improving the soil structure, conditioning the plant variation adaptability, enhancing the absorption capacity of the plants, promoting the formation of plant chlorophyll and guaranteeing the crop yield and income increment.

The invention relates to a method for preparing a novel food additive amino acid chelate, and the method comprises the following steps: acidic amino acid and calcium oxide or calcium hydroxide are chelated in a proper condition to obtain the calcium amino acid chelate; and the calcium amino acid chelate reacts with sulphates of zinc, iron, magnesium, copper, manganese and cobaltic to obtain the corresponding amino acid chelate. The amino acid micro-element chelate produced by the method is characterized in that the products are electric neutrality, do not carry other ions besides amino acid and microelements and have simple process, no environment pollution; the byproduct calcium sulphate is taken as raw auxiliary materials in food and medical fields. Due to the advantages of large dissolubility quality, stable properties, safety and effectiveness and no toxic side effect and the like, the stable amino acid micro-element chelate can bring new commercial opportunities for future healthcare products and medicinal markets.

The invention relates to a composite nutrition rice rich in vitamins and a processing method thereof. Raw materials for the nutrition rice comprise 20 to 35 of polished round-grained rice flour, 10 to 20 of degreased soybean meal, 5 to 10 of wheat flour, 5 to 10 of sweet rice flour, 6 to 18 of potato starch, 5 to 10 of maltodextrin, 2 to 5 of acetate starch, 0.2 to 0.4 of calcium amino acid chelate, 0.12 to 0.36 of xanthan gum, 0.07 to 0.29 of konjac glucomannan and 9 to 18 of vegetable powder. The processing method comprises the following main steps: delivering a mixed material into a composite rice extruding and curing machine; respectively and successively adding a supercritical CO2 fluid and a mixture of spinach powder and celery powder, or a mixture of carrot powder and pumpkin powder or a mixture of tomato powder and purple sweet potato powder after opening a temperature control area of a third zone; and carrying out shaping and shearing so as to prepare granular composite rice with different colors. The multi-color multi-vitamin composite rice provided by the invention has abundant and bright colors, a plurality of effective vitamin ingredients, high activity, reasonably collocated nutrients and good color, flavor and taste.

The invention relates to a nutritional composition for calcium supplement. The nutritional composition includes Ca, P and omega-3 unsaturated fatty acid, the Ca:P ratio is 1.3-2.5:1, the Ca:omega-3 unsaturated fatty acid ratio is 1:0.2-4, a mineral matter calcium source comprises one or a plurality of milk mineral, calcium carbonate, calcium gluconate, calcium amino acid chelate, calcium phosphate, calcium hydrogen phosphate and calcium lactate, and a mineral matter phosphorus sauce comprises one or a plurality of milk mineral, calcium phosphate and calcium hydrogen phosphate. A pharmaceutically or bromatologically acceptable carrier is added to the above raw materials to prepare various oral liquid preparations or solid and semisolid preparations. The nutritional composition having the above combination has the advantages of full performance of the respective efficacies of above three nutrients, synergistic effect of the three nutrients, improvement of the absorption rate of Ca in the body, and increase of the bioavailability of Ca, makes an eater still have a good effect without reverse after the supplementation of the nutritional composition is stopped for a long time, especially overcomes the easy appearing disadvantage of calculi caused by present calcium preparations, and realizes the efficacy of no kidney (or urinary system) calculi during the calcium supplementation.

The invention discloses a novel production process of nanometer calcium amino acid chelate based on the energy conversion of a chelant (amino acid) and the calcium ions. The process comprises the following steps: preparing the calcium compound and the chelant (amino acid) of the reactants into a water suspension solution with a proper grammole proportion; injecting the solution into an SY-NANO high pressure fluid nano-grinding after the pretreatment; performing the strong impacting pressure, the instantaneous high temperature and the ultrahigh frequency ultrasonic wave together on the suspension solution based on the cavitation collapse action principle to break the covalent bond of the amino acid to form the dentate; obtaining the calcium amino acid chelate by the chelation reaction of the dentate and the calcium ions. The key point of the invention lies in applying the Nanotechnology into the production of the calcium amino acid chelate, and improving the relevant parameters of the chelation reaction simultaneously. The novel process has the advantages of short period, high efficiency and continuous production. The annual output of one production line can reach 200 tons. The invention has significant economic value and social significance on the quality improvement of the calcium supplementation products and the health advancement of the people.

The invention discloses a method for preparing amino acid chelated calcium by utilizing egg shells, comprising the following steps: washing egg shells; micronizing; adding the micronized egg shells into organic acid solution; stirring and filtering under the environment of room temperature; adding sodium hydroxide into supernatant fluid and adjusting the pH value to 3-6; adding amino acid according to coordination ratio; standing still and centrifugating after constant temperature; and washing and precipitating for a plurality of times by using solvent and drying to obtain the finished product. The method for preparing amino acid chelated calcium by utilizing egg shells adopts the coordination method, and has simple technology and mild reaction conditions; the obtained product has the advantages of good physical and chemical stability, high biological value and the like; and the method can be used for reinforcer of foods such as milk powders, flour, beverage and the like.

The invention discloses a high-efficiency water-retaining fertilizer-conserving agent for landscaping and a preparation method thereof. The high-efficiency water-retaining fertilizer-conserving agent comprises the following raw materials by weight: 5 to 6% of cotton straw, 10 to 20% of potassium dihydrogen phosphate, 15 to 20% of diammonium phosphate, 10 to 15% of cottonseed hull, 20 to 30% of sorghum straw charcoal powder, 6 to 8% of river mud, 2 to 3% of potassium mineral, 1 to 2% of calcium hydrogen phosphate, 4 to 5% of zinc EDTA chelate, 5 to 8% of biological bacteria and 40 to 60% of a soil conditioner. The soil conditioner comprises the following raw materials by weight: 9 to 11 of prepared Agaricus Blazei dregs, 12 to 14 of urea, 21 to 25 of sawdust, 5 to 6 of iron EDDHA chelate, 5 to 6 of copper amino acid chelate, 5 to 6 of magnesium amino acid chelate, 5 to 6 of calcium amino acid chelate, 5 to 6 of boron amino acid chelate, 5 to 6 of manganese amino acid chelate, 2 to 3 of polyacrylamide and 1 to 2 of fine powder of potash feldspar.

The invention discloses an efficient amino acid chelated leaf fertilizer containing trace elements, relating to the technical field of agricultural fertilizer production. The efficient amino acid chelated leaf fertilizer containing trace elements is prepared by proportioning the following components in parts by weight: 20-25 parts of urea, 0.4-1.0 part of amino acid chelated boron fertilizer, 1-2 parts of potassium sulfate, 0.5-0.8 part of amino acid chelated zinc fertilizer, 7-10 parts of monopotassium phosphate, 0.5-0.8 part of amino acid chelated manganese fertilizer, 0.1-0.2 part of surfactant, 0.1-0.3 part of amino acid chelated iron fertilizer, 0.01-0.04 part of plant growth substances, 1.2-2.0 parts of amino acid chelated calcium fertilizer and 62-65 parts of water. The efficient amino acid chelated leaf fertilizer containing trace elements, which is disclosed by the invention, has the characteristics that the fertilizer contains the trace elements extremely easy for crops to absorb, can enhance the abilities of the crops against diseases and on the like, and can be widely used for supplementing the trace elements for the crops like tobaccos, vegetables, melons, fruits, flowers, trees and the like when the crops are planted.

The invention discloses a production method of dual-acid chelating organic-inorganic composite fertilizer, which belongs to the manufacturing field of the composite fertilizer. The fertilizer is produced by adopting following raw materials that: ammonuim humate, monoammonium phosphate, potassium sulphate, compost, cake fertilizer, animal manure, pollution-free river mud 5%, plant ash, organic fertilizer fermentation agent, sterilizing deodorization agent, nitro-humic acid, humic acid magnesium, humic acid zinc, humic acid urea iron, amino acid chelating boron, amino acid chelating copper, amino acid chelating manganese, amino acid chelating molybdenum and amino acid chelating calcium. Besides abundant nitrogen, phosphorus and potassium, the fertilizer also contains organisms and multiple trace elements in amino acid and humic acid chelation, after the fertilizer is used for a long time, the soil structure can be high efficiently regulated, the soil can be activated, and functions for improving the soil, stimulating the growth of crops, obviously improving agricultural product quality and the like can be realized.

The invention discloses a production method of an organic and inorganic composite fertilizer containing amino acid trace element chelates, and the product belongs to the field of composite fertilizer. The organic and inorganic composite fertilizer is composed of urea, monoammonium phosphate, potassium sulphate, a dry mixture of pig manure and cow manure, a mixture of peanut straw and rape stalk, a mixture of cotton seed cake and rapeseed cake, a mixture of rice husk and wheat bran, dry pollution-free river mud, plant ash, distillers' grain, biogas residue, an organic fertilizer leavening agent, a sterilizing and deodorizing agent, amino acid chelated calcium, amino acid chelated copper, amino acid chelated iron, amino acid chelated manganese, amino acid chelated zinc, and ammonium molybdate; the preparation method of the composite fertilizer comprises the following steps: preparing the raw materials mentioned above, and then subjecting the raw materials to processes of grinding, fermenting, mixing, granulating, and drying so as to obtain the composite fertilizer. The method has the advantages of simple technology, universal equipment, and high quality product. The product contains a large amount of inorganic substances, organic substances and trace elements, has comprehensive nutritional components and a long fertilizing effect, and can achieve the complementary advantages of organic substances and inorganic substances.

The invention discloses a preparation method of composite amino acid chelated calcium. The method adopts scallop outer mantles and scallop shells which are leftovers of scallop processing as raw materials, fully utilizes the characteristics that the scallop outer mantles are high in crude protein content and the scallop shells are high in calcium carbonate content, and subjects the scallop outer mantles to cooking, degreasing, enzymolysis and chelation with calcium salt so as to obtain an organic calcium product rich in a plurality of amino acids. Not only the method fully utilizes the leftovers of scallop processing and reduces production cost, but also the prepared composite amino acid chelated calcium has high nutritional value and a delicious taste so as to bring great economic value.

The invention relates to a preparation method of composite calcium amino acid chelate by hems of shells and scallops as raw materials, comprising the steps of using 0.05 M of hydrochloric acid to soak shells, drying and crushing the shells, treating the shells powder by water-refining method, obtaining calcium-based shell powder; using neutral protease, papain and acid protease to perform enzymolysis for hems of fresh scallops, obtaining composite amino acid solution; mixing the composite amino acid and the shell powder according to the mol ratio of 2: (1.0-1.2) (based on 92% of calcium content in the calcium carbonate; performing chelating in a gradient manner at pH of 5, pH of 8 and pH of 11 in turn; maintaining the temperature for 2 h under every pH gradient; condensing the mixture solution to be paste, adding absolute ethyl alcohol to precipitate; performing low-temperature re-crystallizing and drying by absolute ethyl alcohol, and obtaining composite calcium amino acid chelate. The method is simple and convenient and can process wastes such as hems of shells and scallops in a high value manner.

The invention discloses a production method for a peanut special fertilizer. The product belongs to the field of chemical fertilizers. The peanut special fertilizer is prepared by taking the characteristics of peanut growth into full consideration; a certain amount of trace elements is also added apart from a certain amount of nitrogen, phosphorus and potassium; the fertilizer contains nitrogen, phosphorus and potassium, various amino acid chelated medium and trace elements, a soil conditioning agent, a growth promoter, rooting powder, humus and the like, so that the nitrogen, phosphorus and potassium and the trace elements in the soil can be absorbed and utilized by peanut to the greatest extent. The special fertilizer is produced from the following raw materials: urea, monoammonium phosphate, potassium sulfate, amino acid chelated molybdenum, amino acid chelated boron, amino acid chelated zinc, amino acid chelated calcium, amino acid chelated magnesium, amino acid chelated manganese, the soil conditioning agent, the growth promoter, the rooting powder and the organic humus.

The invention discloses a shell solidifying mixed feed for penaeus monodon and a preparation method thereof. Raw materials of the feed consist of the following components in percentage by weight: 15-30 percent of fish meal, 5-10 percent of meat and bone meal, 1-5 percent of chiken meat meal, 1-5 percent of housefly larvae powder, 10-20 percent of fermented soybean meal, 10-15 percent of peanut bran, 1-5 percent of beer yeast, 1-5 percent of cuttlefish cream, 1-5 percent of shrimp head meal, 15-25 percent of strong flour, 1-5 percent of sea fish oil, 1-3 percent of soybean lecithin, 0.5-1.5 percent of calcium dihydrogen phosphate, 0.1-0.5 percent of calcium amino acid chelate, 0.1-0.5 percent of cholesterol, 0.01-0.1 percent of bacillus subtilis, 0.1-0.5 percent of spirulina powder, 0.1-0.5 percent of vitamin C-phosphate ester (35 percent), 0.05-0.1 percent of vitamin D3, 0.1-0.5 percent of composite multivitamins and 0.1-0.5 percent of composite mineral salt. The shell solidifying mixed feed for the penaeus monodon effectively meets the complete demand of the shrimps on nutritive materials at special stages of castoff and renew; the situations such as soft shell or failure of castoff of the shrimps are obviously improved; and the immunity of the penaeus monodon is obviously improved.

The invention discloses an efficient cleaning production process of compound amino acid chelated calcium. Through proteolysis, inorganic calcium is added in the middle and late stage of enzymatic hydrolysis for chelation; and then enzyme inactivation, solid-liquid separation, ultrafiltration, concentration and drying are carried out to obtain the compound amino acid chelated calcium. At the same time, high molecular protein, inorganic calcium and purified water isolated in an intermediate process are reused as part of the raw materials for the production of a next batch. The invention combines enzyme reaction with chelating reaction, and the chelating reaction is carried out in the middle to late stage of the enzyme reaction to shorten the production cycle. The production process has mild reaction conditions, and does not require high temperature and high pressure complex equipment; and the whole process does not use any excessive material such as organic solvent and inorganic acid and alkali, and the produced product is safe and reliable. The process fully recycles raw materials, improves product yield, reduces discharge of sewage and solid waste by the maximum level, and achieves clean production.

The present invention discloses a composite amino acid chelated calcium prepared by using oysters as raw materials which consists of the composite amino acid powder prepared by oysters and the modified calcium carbonate prepared by oyster shells; the soluble calcium content of the modified calcium carbonate is 28.08%, the mass ratio of the composite amino acid powder prepared by oysters and the modified calcium carbonate prepared by oyster shells is 1:1.5; the composite amino acid chelated calcium not only improves the absorption and utilization of medicines, but also opens up a new way for the comprehensive utilization of the oyster shells, and thereby greatly improving the added value of freshwater aquaculture.

The invention relates to a preparation method of rana chensinensis frogspawn calcium amino acid chelated food, belonging to the agricultural product processing technique. The preparation method comprises the following steps: taking frogspawns as raw materials, drying, powdering, extracting and degreasing to obtain purified degreased frogspawn powder; under mild conditions, preparing frogspawn amino acid compound hydrolyzed solution by enzymolysis of various proteolytic enzymes; and then taking calcium chloride as a calcium source to prepare rana chensinensis frogspawn compound calcium amino acid chelated food by the chelation. In the method, waste frogspawns with abundant nutrition are prepared into healthcare food so as to spread the application range of the frogspawn. The method has thecharacteristics of reasonable and simple process and high utilization ratio of the frogspawns.

The present invention discloses preparation process of amino acid-calcium chelate. Through converting strong acid type cationic exchange resin into calcium type with calcium ion, reacting in column with mixed solution of leucine and sodium hydroxide in the molar ratio of 1 to 0.5-2 at normal temperature, collecting the effluent at the flow rate of 0.05-1 BV / hr, and vacuum concentration to crystallize leucine-calcium chelate. The leucine-calcium chelate has high water solubility, high absorption rate, no stimulation to gastrointestinal tract and other features, and can meet the requirement of human body in replenishing calcium and amino acid. The preparation process has the advantages of low production cost, high conversion rate and high product purity, and is suitable for industrial production.

The invention provides a soil conditioner capable of preventing and treating soil hardening and absorbing heavy metal. The soil conditioner capable of preventing and treating soil hardening and absorbing heavy metal comprises bentonite, zeolite powder, lentinan, Enteromorpha prolifera, diatomite, animal manure, potassium humate, composite amino acid, sodium alginate, brown algae powder, jerusalemartichoke extract product, black fungus polysaccharide, a composite microbial solution, attapulgite, and amino acid chelated calcium. The effective bacterium content of the soil conditioner ranges from 28 to 35*10<9> / g, the pH value ranges from 6.2 to 6.8. The soil conditioner possesses obvious heavy metal absorption effect, is capable of reducing heavy metal content of crops, and increasing cropyield.

The invention provides a preparation method of a glycine trace element chelate with high purity. The method comprises the following steps: first, dissolving a certain amount of amino acid in water; reacting the amino acid aqueous solution and calcium oxide or calcium hydroxide at room temperature to obtain a calcium amino acid chelate solution; and then reacting the calcium amino acid chelate solution with metal sulfate to obtain a target compound. The method provided by the invention prepares the glycine trace element chelate with high purity at a low cost; and the chelate has high stability, is conducive to digestion and absorption of animal body, and can be used as a feed additive.

The invention discloses a method for preparing a glutamic acid chelated calcium tablet by utilizing waste bone, and belongs to the field of calcium tablets. According to the method, animal bone is taken as a calcium source raw material, and the animal bone directly reacts with glutamic acid to prepare glutamic acid chelated calcium powder, the glutamic acid chelated calcium powder is subjected to purification and tabletting to obtain the glutamic acid chelated calcium tablet. The glutamic acid chelated calcium tablet prepared by the preparation method disclosed by the invention has good chemical and biological stability, and is high in bioavailability, safe and free of toxic and side effects; and the calcium absorption rate is good, calcium content in the calcium tablet is higher than 10%, and the calcium source raw material is rich in source, the cost is low, and the process is simple.

The invention relates to an apple foliage fertilizer. Each 100kg of water contains 1000g of water-soluble ammonium polyphosphate, 400g of amino acid chelated calcium, 800g of potassium sulfate, 100g of magnesium chloride, 200g of ferrous sulfate, 100g of sodium molybdate, 100g of manganese sulfate and 100g of zinc sulfate. The fertilizer is prepared through the steps of adding above components to 100kg of water, fully stirring for uniform mixing, adding 100g of indoleacetic acid, and fully stirring. In the invention, N, P, K, trace elements and a growth stimulator are organically integrated to form the foliage fertilizer having abundant nutrition and a scientific ratio; the foliage fertilizer can be sprayed on apple trees each year, can be directly absorbed by leaf surfaces, accelerates the metabolisms of the fruit trees, increases the nutrients of the fruit trees within a short time, substantially improves the photosynthesis intensity, and has a small application amount each time; and compared with soil fertilization, the foliage fertilizer has the characteristics of small consumption and good effect.

The invention provides composition for assisting in treating gout and increasing bone density. The composition comprises following raw materials in parts by weight: 1800-2200 parts of probiotics enzymes, 2-10 parts of fish bones, 2-10 parts of bovine bones, 2-10 parts of bovine bone marrow, 0.1-1 part of calcium amino acid chelate, 5-30 parts of biological calcium carbonate, 0.5-5 parts of calcium gluconate, 0.1-1 part of zinc gluconate, 0.5-5 parts of glucosamine hydrochloride, 0.5-5 parts of chondroitin sulfate, 2-10 parts of bone collagen, 0.1-1 part of selenium, 2-10 parts of sour pomegranate fruits, 2-10 parts of gynura divaricata, 2-10 parts of barbary wolfberry fruits, 2-10 parts of poria cocos, 2-10 parts of Chinese dates, 1-5 parts of fresh ginger, 1-5 parts of manyflower solomonseal rhizomes and 1-5 parts of ginseng. The composition is rich in functional component and calcium supplement, can effectively assist in treating gout and can increase the bone density and prevent osteoporosis. Besides, the invention also relates to an application of the composition.

The invention discloses a preparation method and equipment of nano amino acid chelated calcium. The method comprises the following steps: step 1, selecting and weighing a corresponding calcium compound, and pre-treating the calcium compound; step 2, adding an organic acid solution into the obtained treated object, and carrying out corresponding treatment in centrifugal equipment; step 3, taking out the supernate obtained in the step 2, and adding a blender into the supernate to adjust the pH value of the supernate; step 4, adding amino acid, and suspending the calcium compound and the amino acid in water to prepare a suspension; step 5, pumping the suspension into a high-pressure fluid nano mill for chelation reaction to obtain a clear solution; and step 6, drying the solution to obtain the nano amino acid chelated calcium. The preparation method disclosed by the invention is simple, and the cost is reduced; and after the scheme is adopted, the product purity of the amino acid chelated calcium is improved, the production process cost is lower, the product conversion rate is high, and the amino acid chelated calcium product can be industrially produced on a large scale.

The invention relates to a collagen-calcium chelate and a preparation method thereof. In traditional calcium preparations, the calcium preparation mainly including inorganic salts and organic salts has low absorption and utilization rates; the amino acid chelated calcium can not supplement collagen and calcium simultaneously; the collagen chelated calcium mainly comprises acid soluble collagen from animal cartilage or skin tissue, and the application of the heterogeneous and xenogenous collagen in human bodies has the risks of high infection rate and high rejection rate. The collagen-calcium chelate provided by the invention is a functional food manufactured by combining calcium elementa with collagen and is prepared from animal-based collagen or humanlike collagen and soluble calcium salts as raw materials through the water system synthesis method. The collagen-calcium chelate has the advantages of good stability and high biological value and can be directly absorbed by the intestinal mucosa to actually realize high absorption, calcium is deposited in the bones under the adhesion of collagen, and the purpose of enhancing the flexibility and the hardness of the bones is finally achieved.

The invention discloses glutamic acid chelated calcium prepared by using eggshells as a calcium source and a preparation method of glutamic acid chelated calcium. The glutamic acid chelated calcium is prepared by using the eggshells as a calcium source raw material and adopting direct reaction. Key technical parameters, namely the molar ratio, pH value, chelating temperature and chelating time, are subjected to response surface optimization design on the basis of a single factor test; the determined optimal preparation process conditions are as follows: the pH value of a solution is 6-8, the molar ratio of eggshell meal to glutamic acid is 1:2 to 1:3, the chelating temperature is 60-80 DEG C, and the chelating time is 50-70min. The prepared glutamic acid chelated calcium has a predominant calcium absorption effect through verification, the chelating rate of the glutamic acid is up to 63.88%, a high absorption type active calcium supplement preparation is obtained, the solubility of the preparation is 33-33.4%, the preparation is neutral in a 10% aqueous solution, the pH value of the preparation is 6.0-7.5, the preparation is good in stability, and the calcium content of the preparation is 10.9-13.5%, so that the preparation has a wide application value.

The invention relates to a preparation method of amino acid chelated calcium. The preparation method comprises the following steps: preparing a mixture by mixing a calcium-containing compound and an amino acid ligand according to a specific ratio, adding a right amount of water into the mixture, performing primary filtration on the material to obtain a first suspension having a solid particle size less than 20 mu m, regulating the pH value, performing homogenization treatment to enable the solid particle size to reach the nano level, performing secondary filtration after the homogenization treatment filtration a second suspension having a solid particle size less than 100 nm, and finally performing chelation reaction on the second suspension at specific temperature and pressure. Thus, the chelation rate and the reaction efficiency of the chelation reaction are greatly improved, the reaction time is short, and the reaction is complete. The amino acid chelated calcium is high in yield; the mass percent of the calcium element in the amino acid chelated calcium is up to 12.9%; and the amino acid chelated calcium prepared by the method can be absorbed by a human body very easily, and the absorptivity is up to 95% or above.